This is an oil drain crush washer. This "dead soft" aluminum crush washer is made by G.W.R. Specialty Automotive Products and is deigned to be an exact replacement for the original drain plug washer that came from the factory. These will fit all Goldwing GL1000's, GL1100's, GL1200's, GL1500's, GL1800's and F6B's from 1975-2017. 86-7161DS